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Posted to issues@ignite.apache.org by "Pavel Kuznetsov (JIRA)" <ji...@apache.org> on 2019/02/07 19:43:00 UTC
[jira] [Created] (IGNITE-11251) SQL: getMoreResults() infinitely
reports about update operation on zeroCursor
Pavel Kuznetsov created IGNITE-11251:
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Summary: SQL: getMoreResults() infinitely reports about update operation on zeroCursor
Key: IGNITE-11251
URL: https://issues.apache.org/jira/browse/IGNITE-11251
Project: Ignite
Issue Type: Bug
Components: jdbc, sql
Reporter: Pavel Kuznetsov
If we got sql query that contain empty statement, jdbc thin driver will allways return {{true}} from {{getMoreResults}} method.
Jdbc spec says:
{noformat}
oves to this Statement object's next result, returns true if it is a ResultSet object,
<...>
Returns:
true if the next result is a ResultSet object; false if it is an update count or there are no more results
{noformat}
so test :
{code:java}
@Test
public void test () throws Exception {
try (Connection c = GridTestUtils.connect(grid(0), null)) {
try (PreparedStatement p = c.prepareStatement(";")) {
boolean isResultSet = p.execute();
// Adding next line works the problem around:
// p.getUpdateCount() == 0;
boolean isResultSetReturned = p.getMoreResults();
// should be false:
assertFalse(isResultSetReturned); // == true
}
}
}
{code}
{{getResultSet}} is {{null}} in this case.
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